Stockholder Contacts

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Shareholders

For Oxy shareholders with questions regarding your account, please contact Oxy’s transfer agent, EQ Shareowner Services:

EQ Shareowner Services
Toll free: (877) 699-8166
International callers: (651) 450-4064
www.shareowneronline.com

For standard mail inquiries:
Occidental
c/o EQ Shareowner Services
P.O. Box 64874
St Paul, MN 55164-0874

For certified and overnight inquiries:
Occidental
c/o EQ Shareowner Services
1110 Centre Pointe Curve, Suite 101
Mendota Heights, MN 55120-4100

Owner Relations

For Royalty Owners, please contact Owner Relations:

Oil & Gas Royalty Interest Owners
Oxy USA, Inc.
Attn: Land Administration
P.O. Box 27570
Houston, TX 77227-7757
(713) 215-7231
Owner_Relations@oxy.com
www.oxyroyalty.com

Investor Relations

For questions regarding Oxy's business, strategy, or financial results, please contact Investor Relations:

Investor Relations
Investors@oxy.com
(713) 552-8811

Corporate Secretary
OfficeoftheCorporateSecretary@oxy.com